I don't think sucking is what Helsin did when he was wildshaped, but the video was censored so I am not 100% sure.
Okay, so I need to explain this joke for you Time4Pizza as it relies on some Larian-specific humor.
Halsin is a druid and future companion in Baldur's Gate 3. He has the ability to wildshape into a bear.
During the last Panel from Hell, a series of community engagement shows the developers put on, they showcased a few romance scenes. One of these romance scenes involved Astarion, a vampire companion and potential Origin, and Halsin. During this romance scene, they initiate a sexual encounter; however, Halsin accidentally turns into a bear, saying sometimes he cannot control his wildshape. The audience then has the ability to shout out what dialogue option Astarion should choose, and he says "Don't worry, I like it." The romance scene cuts away after Halsin turns back into a bear, cutting to a squirrel dropping its acorn in shock at what it is seeing. This spawned a MASSIVE controversy that sold over 1M more copies of BG3, and spawned the "Bear Sex" meme.
I think you can understand the joke from there.
